Decade Counter / Divider
Mar 30, 2006
The HD74HC4017 is a 5-stage divide-by-10 Johnson counter with ten decoded outputs and a carry-out bit. High-speed
operation and spike-free outputs are obtained by use of the Johnson decade counter configuration.
The ten decoded outputs are normally low and go high only at their respective decimal time periods. A high signal on
Reset R asynchronously clears the decade counter and sets the carry output and Y0 high. With CE low, the count is
advanced on a low-to-high transition at C input. Alternatively, if C is high, the count is advanced on a high-to-low
transition at CE. Each decoded output remains high for one full clock cycle. The carry output is high while Q0, Q1, Q2,
Q3 or Q4 is high, then is low while Q5, Q6, Q7, Q8 or Q9 is high.
• High Speed Operation
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
• Ordering Information
HD74HC4017FPEL SOP-16 pin (JEITA)
HD74HC4017RPEL SOP-16 pin (JEDEC)
Note: Please consult the sales office for the above package availability.
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
Notes: 1. X: Don’t care
2. If n < 5 Carry = “H”, Otherwise = “L”
R Decode Output = n
Rev.2.00 Mar 30, 2006 page 1 of 10